The care will not be much different than your big guy other than smaller food. Make sure you quarantine the little guy for at least 30 days and do a fecal test before you put him in with your bigger frog. Quarantine can be very basic, unprinted paper towel substrate, a food dish (if you bowl feed, which I would recommend because you can see exactly how much your new baby is eating,) and a water dish. I do have a branch in mine also to give them a place to perch. Change the paper towel and the water daily.